Align desktop theming around Noctalia Ayu

- Move Sway, GTK, Qt, Alacritty, and Emacs toward the Noctalia-generated Ayu theme
- Add shared font/cursor settings, qt5ct/qt6ct templates, and Flatpak theme integration support
- Keep browser and Telegram theming manual while preserving generated Noctalia assets where useful

ansible/roles/profile_desktop_sway/templates/noctalia-settings.json.j2

@@ -561,15 +561,17 @@
             {"enabled": true, "id": "alacritty"},
             {"enabled": true, "id": "gtk"},
             {"enabled": true, "id": "emacs"},
-            {"enabled": true, "id": "telegram"}
+            {"enabled": true, "id": "telegram"},
+            {"enabled": true, "id": "qt"},
+            {"enabled": true, "id": "sway"}
         ],
         "enableUserTheming": false
     },
     "ui": {
         "boxBorderEnabled": false,
-        "fontDefault": "Sans Serif",
+        "fontDefault": "{{ desktop_ui_font_family | default('Noto Sans') }}",
         "fontDefaultScale": 1,
-        "fontFixed": "monospace",
+        "fontFixed": "{{ desktop_fixed_font_family | default('Hack Nerd Font') }}",
         "fontFixedScale": 1,
         "panelBackgroundOpacity": 0.93,
         "panelsAttachedToBar": true,